spark plugs

[05SCtaco]

Ok, so i changed my spark plugs on my 96 tercel 4 speed manual, and what i noticed is that it saids to use the two prong spark plugs, I went to the store and they looked up the car, and gave me regular one prong spark plugs. I gapped and installed, and everything runs fine, but should i be worried that the plugs i have will hit the heads? Or are they ok?

[Flip123]

you should be ok, im using ngk iridiums IX and there only single electrode. i just tracked on them also and they are just fine

[05SCtaco]

thanks for the info